Numerical study of a crossflow heat exchanger to investigate thermal performance using nanofluids

8TH BSME INTERNATIONAL CONFERENCE ON THERMAL ENGINEERING Pub Date : 2019-07-18 DOI:10.1063/1.5115927

Jaed Al Nahian, P. Pandit, M. Mamun

{"title":"Numerical study of a crossflow heat exchanger to investigate thermal performance using nanofluids","authors":"Jaed Al Nahian, P. Pandit, M. Mamun","doi":"10.1063/1.5115927","DOIUrl":null,"url":null,"abstract":"In this study, conjugate heat transfer between solids and fluids has been analyzed for a cross flow rectangular shaped microchannel heat exchanger. Three different nanofluids have been used such as CuO-water, Al2O3-water and Al2O3-ethylene glycol to investigate the effect of changing nanoparticles volume fraction as well as, effect of changing the base fluid at constant temperature. Volume fraction has been varied from 0.5% to 4%. These nanofluids have been widely used in compact heat exchangers, micro reactors, automotive radiators etc. for their exhibition of larger thermos-physical properties than conventional fluids due to presence of nanosized particles in them which enhance heat transfer. It has been observed that changing the base fluid has had a much significant effect than changing the nanoparticle. Heat transfer coefficient, pressure drop and pumping power requirement have been investigated in terms of varying nanoparticles volume fraction and Reynolds number. In addition, different characteristics such as isotherms, channel wall temperature have been graphically shown.In this study, conjugate heat transfer between solids and fluids has been analyzed for a cross flow rectangular shaped microchannel heat exchanger. Three different nanofluids have been used such as CuO-water, Al2O3-water and Al2O3-ethylene glycol to investigate the effect of changing nanoparticles volume fraction as well as, effect of changing the base fluid at constant temperature. Volume fraction has been varied from 0.5% to 4%. These nanofluids have been widely used in compact heat exchangers, micro reactors, automotive radiators etc. for their exhibition of larger thermos-physical properties than conventional fluids due to presence of nanosized particles in them which enhance heat transfer. It has been observed that changing the base fluid has had a much significant effect than changing the nanoparticle. Heat transfer coefficient, pressure drop and pumping power requirement have been investigated in terms of varying nanoparticles volume fraction and Reynolds number. In addition, different characterist...","PeriodicalId":423885,"journal":{"name":"8TH BSME INTERNATIONAL CONFERENCE ON THERMAL ENGINEERING","volume":"202 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2019-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"8TH BSME INTERNATIONAL CONFERENCE ON THERMAL ENGINEERING","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1063/1.5115927","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 1

Abstract

In this study, conjugate heat transfer between solids and fluids has been analyzed for a cross flow rectangular shaped microchannel heat exchanger. Three different nanofluids have been used such as CuO-water, Al2O3-water and Al2O3-ethylene glycol to investigate the effect of changing nanoparticles volume fraction as well as, effect of changing the base fluid at constant temperature. Volume fraction has been varied from 0.5% to 4%. These nanofluids have been widely used in compact heat exchangers, micro reactors, automotive radiators etc. for their exhibition of larger thermos-physical properties than conventional fluids due to presence of nanosized particles in them which enhance heat transfer. It has been observed that changing the base fluid has had a much significant effect than changing the nanoparticle. Heat transfer coefficient, pressure drop and pumping power requirement have been investigated in terms of varying nanoparticles volume fraction and Reynolds number. In addition, different characteristics such as isotherms, channel wall temperature have been graphically shown.In this study, conjugate heat transfer between solids and fluids has been analyzed for a cross flow rectangular shaped microchannel heat exchanger. Three different nanofluids have been used such as CuO-water, Al2O3-water and Al2O3-ethylene glycol to investigate the effect of changing nanoparticles volume fraction as well as, effect of changing the base fluid at constant temperature. Volume fraction has been varied from 0.5% to 4%. These nanofluids have been widely used in compact heat exchangers, micro reactors, automotive radiators etc. for their exhibition of larger thermos-physical properties than conventional fluids due to presence of nanosized particles in them which enhance heat transfer. It has been observed that changing the base fluid has had a much significant effect than changing the nanoparticle. Heat transfer coefficient, pressure drop and pumping power requirement have been investigated in terms of varying nanoparticles volume fraction and Reynolds number. In addition, different characterist...

查看原文本刊更多论文

利用纳米流体对横流换热器热性能进行数值研究

本文对横流矩形微通道换热器的固液耦合传热进行了分析。采用cuo -水、al2o3 -水和al2o3 -乙二醇三种不同的纳米流体，考察了在恒温条件下改变纳米颗粒体积分数的影响以及改变基液的影响。体积分数从0.5%到4%不等。这些纳米流体被广泛应用于紧凑的热交换器、微反应器、汽车散热器等，因为它们比传统流体具有更大的热物理性质，因为它们中存在纳米级颗粒，可以增强传热。已经观察到，改变基液比改变纳米颗粒有更显著的效果。研究了纳米颗粒体积分数和雷诺数变化对传热系数、压降和泵送功率的影响。此外，还用图形表示了等温线、通道壁温度等不同特性。本文对横流矩形微通道换热器的固液耦合传热进行了分析。采用cuo -水、al2o3 -水和al2o3 -乙二醇三种不同的纳米流体，考察了在恒温条件下改变纳米颗粒体积分数的影响以及改变基液的影响。体积分数从0.5%到4%不等。这些纳米流体被广泛应用于紧凑的热交换器、微反应器、汽车散热器等，因为它们比传统流体具有更大的热物理性质，因为它们中存在纳米级颗粒，可以增强传热。已经观察到，改变基液比改变纳米颗粒有更显著的效果。研究了纳米颗粒体积分数和雷诺数变化对传热系数、压降和泵送功率的影响。此外，不同的特点……

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

8TH BSME INTERNATIONAL CONFERENCE ON THERMAL ENGINEERING

自引率

0.00%

发文量